Instruction Manual DO 6 Economy Hand-held Dissolved Oxygen Meter 68X243622 Rev 0 01/04 Technology Made Easy ... Preface This manual serves to explain the use of the Dissolved Oxygen palm-top meter DO 6. This manual functions in two ways: first as a step by step guide to help you operate the meter; second, it serves as a handy reference guide. This manual is written to cover as many anticipated applications of the DO6 palm-top meter as possible. If there are doubts in the use of the Dissolved Oxygen palm-top meters, please do not hesitate to contact the nearest Eutech Instruments / Oakton Instruments authorized Distributor. Eutech Instruments/Oakton Instruments will not accept any responsibility for damage or malfunction to the meter caused by improper use of the instrument. The information presented in this manual is subject to change without notice as improvements are made, and does not represent a commitment on the part of Eutech Instruments / Oakton Instruments. Copyright © 2004 Eutech Instruments Pte Ltd Oakton Instruments All rights reserved. Rev 0, 01/04 TABLE OF CONTENTS 1 2 INTRODUCTION ......................................................................1 DISPLAY & KEYPAD FUNCTIONS......................................2 2.1 2.2 DISPLAY................................................................................2 KEYPAD ................................................................................3 3 PREPARATION.........................................................................4 3.1 INSERTING & REMOVING RUBBER BOOT ..............................4 3.2 INSERTING THE BATTERIES ...................................................5 3.3 BATTERY REPLACEMENT ......................................................6 3.4 DISSOLVED OXYGEN PROBE INFORMATION ..........................7 3.5 CONNECTING THE PROBE TO METER.....................................9 3.6 SWITCHING THE METER ON ................................................10 3.7 MEASUREMENT MODE SELECTION:- PERCENTAGE SATURATION (%), CONCENTRATION (MG/L)(PPM) AND TEMPERATURE(T) ...........................................................................11 4 CALIBRATION .......................................................................12 4.1 IMPORTANT INFORMATION ON METER CALIBRATION .........12 4.2 PREPARING THE METER FOR CALIBRATION.........................13 4.3 TEMPERATURE CALIBRATION .............................................15 4.4 DISSOLVED OXYGEN CALIBRATION IN % SATURATION ......17 4.4.1 To calibrate 100% Saturation: ...................................17 4.4.2 To calibrate 0% Saturation ........................................19 4.5 DISSOLVED OXYGEN CALIBRATION IN MG/L OR PPM CONCENTRATION MODE...................................................................20 4.5.1 5 5.1 5.2 To calibrate in mg/L (ppm) Concentration mode:......20 WITH AUTOMATIC TEMPERATURE COMPENSATION (ATC) 22 MANUAL TEMPERATURE COMPENSATION...........................23 MEASUREMENT ....................................................................22 5.3 TAKING MEASUREMENTS....................................................25 5.3.1 To take measurements: ...............................................25 5.4 TAKING PRESSURE/SALINITY COMPENSATED DO MEASUREMENTS .............................................................................26 5.4.1 Pressure Setting Adjustment.......................................26 5.4.2 Salinity Setting Adjustment.........................................29 6 7 HOLD FUNCTION..................................................................30 ADVANCED SETUP FUNCTIONS.......................................31 7.1 ADVANCED SETUP OVERVIEW ............................................31 7.1.1 To enter the % Saturation or Temperature Set Up menu: ....................................................................................31 7.1.2 To enter the mg/L (ppm) Concentration Set Up menu:... ....................................................................................31 7.2 (COF.1) CONFIGURATION MENU ........................................36 7.2.1 Selection of Automatic Temperature Compensation ..36 7.2.2 Selection of mg/L or ppm mode ..................................38 7.3 (CAL.2) CALIBRATION DATA .............................................39 7.3.1 Viewing the % Saturation calibration data ................39 7.3.2 Viewing the mg/L (ppm) Concentration calibration data ....................................................................................39 7.4 (ELE.3) ELECTRODE PROPERTIES .......................................40 7.4.1 Viewing the electrode Slope Factor............................40 7.4.2 Viewing the % Saturation Offset (Only available in % Saturation or Temperature Set Up menu): .................................40 7.4.3 Viewing the 100% Saturation mV value .....................41 7.4.4 Viewing the 0% Saturation mV value .........................41 7.5 (ATO.4) AUTOMATIC OFF...................................................43 7.6 (RST.5) RESET TO FACTORY DEFAULT ................................44 7.6.1 Calibration Reset........................................................44 7.6.2 User Reset...................................................................46 7.7 (OFS.6) % SATURATION OFFSET ADJUSTMENT ..................47 7.8 (DPR.7) DISSOLVED OXYGEN PARAMETERS .......................49 7.8.1 7.8.2 8 8.1 8.2 8.3 8.4 9 10 11 12 13 14 Pressure Setting Adjustment.......................................49 Salinity Setting Adjustment.........................................51 PROBE CARE .......................................................................53 PRE-MEMBRANED CAPS REPLACEMENT .............................53 TO REPLACE THE PROBE PRE-MEMBRANED CAP...................54 ELECTROLYTE SOLUTION....................................................55 PROBE CARE AND MAINTENANCE.................................52 TROUBLE-SHOOTING GUIDE ...........................................56 ERROR MESSAGES...........................................................57 FACTORY DEFAULT SETTINGS ...................................58 SPECIFICATIONS ..............................................................60 ACCESSORIES....................................................................62 ADDITIONAL INFORMATION .......................................63 14.1 DISSOLVED OXYGEN...........................................................63 14.1.1 General Information...................................................63 14.1.2 Measurement Units.....................................................65 14.1.3 What Is Being Measured? ..........................................65 14.1.4 Air Calibration ...........................................................66 14.1.5 Applications................................................................66 15 16 WARRANTY........................................................................68 RETURN OF ITEMS...........................................................69 Instruction Manual DO 6 1 INTRODUCTION Thank you for purchasing the DO 6 Dissolved Oxygen palm-top meter. This economy microprocessor-based palm-top meter has a large custom LCD (Liquid Crystal Display) for clear and easy reading. The DO 6 offers the measurement of dissolved oxygen in the percentage saturation mode and in the concentration mode. Temperature measurement is also available in degrees Celsius. The meter ensures accurate measurement of the Dissolved Oxygen values through its temperature, barometric pressure and salinity compensation features. Your meter includes a dissolved oxygen probe, refill solution, a rubber boot, 4 alkaline "AAA" batteries, and instruction manual. Please read this manual thoroughly before operating your meter. To order other accessories and standard solutions, please refer to the Section on Accessories for more information. 1 Instruction Manual DO 6 2 DISPLAY & KEYPAD FUNCTIONS 2.1 Display The meter has a large custom LCD that consists of 14-segment 4 digit display and operation annunciators for Percentage Saturation measurement mode (%), Concentration measurement mode (mg/L or ppm) and Temperature measurement mode in degrees Celsius (T). Other annunciators include "A" (when the ATC function is activated), "CAL" (when meter is in calibration mode) and battery diagram for low battery condition. See Figure 1. Low Battery annunciator Calibration Mode Annunciator Temperature Mode CAL TA mg/l ppm % Percentage Mode) A T C annunciator milligram per litre (Concentration Mode) parts per million 14-segment Liquid Crystal Display (Percentage Saturation Figure 1: Active LCD display for DO 6 2 Instruction Manual DO 6 2.2 Keypad The DO 6 meter has 6 keys on its splash-proof keypad; ON/OFF, HOLD/ENTER CAL, MODE, and keys. Some buttons have several functions depending on its mode of operation. ON OFF ON/OFF ­ Powers on and shuts off the meter. The meter will start in the measurement mode it was in when last switched off. CAL ­ Activates the calibration mode for Percentage Saturation, Concentration and Temperature calibrations. Deactivates calibration or setup without confirming a value in calibration mode. CAL HOLD ENTER HOLD -Activates/Deactivates freezing of the measured reading while in measurement mode. ENTER - Confirms the calibration values in Calibration mode and the selections in the SETUP menu. ­ Sets the calibration values during the Concentration and Temperature calibration. Scrolls through each SETUP and its sub group menu. Set offset adjustments and configuration settings. MODE MODE - Selects the measurement option between DO Percentage Saturation measurement; DO Concentration measurement and Temperature measurement. When pressed together with ON/OFF key during power on, SETUP mode is selected. This menu allows meter customization with preferences such as activating ATC selection, DO concentration measurement unit selection, viewing of the last calibration data, viewing of the electrode properties, selecting the auto power off, resetting calibration data or meter settings back to factory default, setting the offset adjustments, setting barometric pressure in Hg or PA for barometric pressure compensation and setting of the salinity value for salinity compensation. 3 Instruction Manual DO 6 3 PREPARATION 3.1 1) Inserting & Removing Rubber Boot To remove meter from rubber boot, push out from the bottom edges of meter until it is completely out of boot. Ensure that the cables of Dissolved Oxygen electrode or temperature probe are not connected. To insert meter into rubber boot, slide in from the top of meter before pushing the bottom edges of meter down to set it into position. Lift up the stand at the back of meter for bench top applications if necessary. 2) Figure 2: Inserting or removing the rubber boot 4 Instruction Manual DO 6 3.2 Inserting the Batteries The battery compartment is found at the back of instrument as shown in Figure 3. To open the battery compartment first remove protective rubber boot/stand then: 1) 2) 3) Push in the direction of arrow and lift up the cover. Note the polarity of battery before inserting into position. After replacement, place cover back and press down until it locks tight. Figure 3: Inserting the batteries 5 Instruction Manual DO 6 3.3 Battery Replacement A low battery annunciator in the LCD alerts you when battery power is running low. See Figure 4. Replace with the same type as recommended by the manufacturer. % Figure 4: Low Battery Condition Caution: Power off the meter when changing battery. 6 Instruction Manual DO 6 3.4 Dissolved Oxygen Probe Information The DO 6 palm top meter is supplied with a Dissolved Oxygen Probe that works on galvanic principle, that is, it does not require any polarising voltage from your meter. Rather it will generate a millivolt signal proportional to the amount of oxygen in the solution. Your DO Probe has a twin cable, one with a BNC connector for the DO measurement input, and the other with a phono jack plug for the temperature measurement input. Its sensing area consists of a cathode, anode, and an inner electrolyte which is separated from your sample solution by an oxygen permeable membrane pre-membraned to the probe's detachable cap. Re conditioning of your probe is made easy with the introduction of this specially designed detachable pre-membraned cap. This light weight probe (93X233912 /35642-50) has a built-in temperature sensor for Automatic Temperature Compensation (ATC) with 12mm diameter epoxy body housing and 16 mm diameter Noryl detachable cap. Its compact sensing area reduces air entrapment which makes it easy to obtain fast, accurate and stable readings. Simply stir the probe in the solution being measured. Shaking will aid to remove bubbles if needed before taking a reading. Also, always ensure to remove water drops from the membrane when calibrating in air. Proper use of probe is e ...